While General Motors sees a role for both Apple and Google in its cars, its president said Tuesday it’s still too early to say whether those companies or another technology name will win the battle for in-vehicle electronics.

“I think it is too soon to call,” said GM President Dan Ammann, speaking at the Rutberg Global Summit in Atlanta.

“We are engaged with all the major players you would expect,” Ammann said. He also said that the company wants to ensure whatever system it puts in a car can accommodate shifts in the types of phones people use.

Ammann agreed with a rival carmaker that autonomous cars will arrive by 2020, but also said that they won’t drop in like something out of the Jetsons. Instead, he noted that cars have been slowly adding individual autonomous capabilities ever since anti-lock braking arrived 20 years ago.